A boyfriend/girlfriend or possibly someone who likes you who becomes let's say, obssesed. Signs that your boyfriend/girlfriend is clingy: doesn't stop calling, constantly tells you how much they love/like you, writes you songs, buys you flowers/chocolate so much it gets annoying, and wants to spend time..all the time.

For serious cases they may begin talking about moving in, or marrige after only a month!

Example:

Sally:When I first started dating Bob it was ok..but now..he's always around me, my answering machine is never empty, and he's best friends with my mom!

When an adorable lovable person constantly touches you to show that they're compassionate & care about you. These people aren't out to get you, or are weird or want a weird sexual relationship with you, they're just very loving & caring people. Don't be rude, they're just showing they care. If being clingy is a bad thing to you, you need to see a psychologist soon.